Fortnite is an online video game developed by Epic Games and released in 2017. It is available in three distinct game mode versions that otherwise share the same general gameplay and game engine: Fortnite Battle Royale, a free-to-play battle royale game in which up to 100 players fight to be the last person standing; Fortnite: Save the World, a cooperative hybrid tower defense-shooter and survival game in which up to four players fight off zombie-like creatures and defend objects with traps and fortifications they can build; and Fortnite Creative, in which players are given complete freedom to create worlds and battle arenas.

Fortnite is distributed as three different game modes, using the same engine; each has similar graphics, art assets, and game mechanics.

Fortnite: Save the World is a player-versus-environment cooperative game, with four players collaborating towards a common objective on various missions. The game is set after a fluke storm appears across Earth, causing 98% of the population to disappear, and the survivors to be attacked by zombie-like “husks”. The players take the role of commanders of home base shelters, collecting resources, saving survivors, and defending equipment that helps to either collect data on the storm or to push back the storm. From missions, players are awarded a number of in-game items, which include hero characters, weapon and trap schematics, and survivors, all of which can be leveled up through gained experience to improve their attributes.

Fortnite Battle Royale is a player-versus-player game for up to 100 players, allowing one to play alone, in a duo, or in a squad (usually consisting of three or four players). Weaponless players airdrop from a “Battle Bus” that crosses the game’s map. When they land, they must scavenge for weapons, items, resources, and even vehicles while trying to stay alive and attack and eliminate other players. Over the course of a round, the safe area of the map shrinks down in size due to an incoming toxic storm; players outside that threshold take damage and can be eliminated if they fail to quickly evacuate. This forces remaining players into tighter spaces and encourages player encounters. The last player, duo, or squad remaining is the winner.

Fortnite Creative is a sandbox game mode, in which players are given complete freedom to spawn any item from the Battle Royale game mode on a personal island, and can create games such as battle arenas, race courses, platforming challenges, and more.

Players can use their pickaxe to knock down existing structures on the map to collect basic resources which are wood, brick, and metal. Subsequently, in all modes, the player can use these materials to build fortifications, such as walls, floors, and stairs. Such fortification pieces can be edited to add things like windows or doors. The materials used have different durability properties and can be updated to stronger variants using more materials of the same type. Within Save the World this enables players to create defensive fortifications around the objective or trap-filled tunnels to lure husks through. In Battle Royale, this provides the means to quickly traverse the map, protect oneself from enemy fire, or delay an advancing foe. Players are encouraged to be very inventive in designing their fortifications in Creative.

While Battle Royale and Creative are free-to-play, Save the World is pay-to-play. The games are monetized through the use of V-Bucks, in-game currency that can be purchased with real-world funds, but also earned through completing missions and other achievements in Save the World. V-Bucks in Save the World can be used to buy loot boxes, in the form of piñatas shaped like llamas, to gain a random selection of items. In Battle Royale, V-Bucks can be used to buy cosmetic items like character models or the like, or can also be used to purchase the game’s battle pass, a tiered progression of customization rewards for gaining experience and completing certain objectives during the course of a Battle Royale season.